Human energy use, perhaps more than any of our other topics, is undergoing a change fast enough that we see it within our lifetimes. Traditional energy sources are being rapidly depleted as new energy sources are being developed, and at the same time, many individuals are beginning to question how they use energy in their everyday lives.
How Wikipedia around the World defines Energy (add your language)
English: In physics, energy (from the Greek ἐνέργεια - energeia, “activity, operation”, from ἐνεργός - energos, “active, working”) is a scalar physical quantity that describes the amount of work that can be performed by a force.
Spanish: The term energy has diverse meanings and definitions related to the idea of capacity to work, transform, or put into movement.
Chinese (能源): Energy mostly means energy resources.
German: Energy is a physical value. Its unit is joule.